A tertiary nanocomposite, PEDOT:PSS/NiFe2O4/reduced graphene oxide (rGO) (GNP) has been synthesized in one-step for super-capacitor application and its electrochemical performance has been compared with NiFe2O4/rGO, NiFe2O4/CNT/rGO and NiFe2O4/CNT. The specific capacitance of GNP nanocomposite is found to be 1090 Fg(-1) and energy density of 660 Whkg(-1) at a current density of 0.5 Ag-1 with cyclic stability of 94% of capacitance retention which are excellent values in its class. The well designed nanostructure and the synergetic effects of individual component results in enhanced electrochemical performance of GNP nanocomposite. (C) 2016 Elsevier Ltd. All rights reserved.